This heat tape is great to use in your heat press or with your iron to hold your project in place. The tape resists the heat and does not leave any marks while holding your image in place. For those of you that do sublimation this is a must so you do not get ghosting from your image shifting in the process. It is stated by the manufacture on the back of the package that it is safe for temperatures up to 428 F / 220 C. Each roll is .78" x 65.58 feet long, or 2cm x 20m.